Author Topic: Dyson DC26 City Stripdown, repair and Refurb (Read 7016 times)

beko1987 · « **on:** February 19, 2015, 12:42:54 AM »

A few years ago, my Dad bought a Dyson DC26 City. After a few months, he declared it utter rubbish, and relegated it to a cupboard and bought a Miele S7 which he should have done in the first place...

When my stepbrother got his own shell of a house and they moved in, he acquired it. He then used it as a shopvac until it didnt suck up anymore, and they banished it to a cupboard.

When we went to visit them the other week, his girlfriend threw this at me and kindly asked if I would remove it from the premesis...

So, it's been about a bit then...

Was also looking a bit sorry for itself

Put it in the car and came home

A few days later, I had a closer look

<a href="https://www.youtube.com/watch?v=mVIsQj-JCQA" target="_blank">https://www.youtube.com/watch?v=mVIsQj-JCQA</a>

Mmmmmm I wonder why that's doing that...

I doubt that will wash up... Lets have a look at the pre motor filter

That picture doesnt really highlight how shite the filter was

Ah, this one does

Crap all in the fan blades

Surely the cyclone can't be that bad?

Yep!

Not even the hose escaped punishment

The cuff was so bad it wouldnt click on to anything

I identified that little problem straight away

The floor tool release valve was bunged up too

Of course, it needed saving, but (as we all know) there is NO information on the net about these. Spare parts are virtually non existant bar filters, so this was a bit of a dive into the unknown, with almost nothing to loose.

Almost... a fellow collector had expressed an interest with this, and a swap for a lovely Hoover Turbopower Boost. Steve, please read this before deciding, it's not in quite as good condition as I said it was after 3 pints of stella4...

So, with almost nothing to loose, here we go!

Couldn't really do much with the floor tool, so it got washed whole

Hose end next

The top cap pops off

and doesnt come off any more! I tried almost to breaking point and it wouldnt budge out the other end

There was a screw

but removing it free'd up nothing so back in it went and the whole thing got washed whole

Cyclone off

The hose is a bit deformed along it's length, has been walked over alot. It also doesnt come off easily...

Remove these three TINY screws

and the holder seperates and can be removed. The hose then pulls out of the machine

Delightful

Tools end is battered

red cap removed again

Onto the machine itself now

The housing pops off the pivot points

The inner holding ring is VERY difficult to get off, sounded like it was seriously breaking but didnt. Wheel then falls off

Filter release catch removed

Other wheel now

Was only a little bit dirty

Filter housing

Sadly, whilst untwisting the caps, one snapped

I swore a bit then carried on

Undo the screws holding the cord rewind cover on

I did the following in completely the wrong order as it turns out. What seems the correct way is:
Undo the screw
carefully withdraw the whole unit (cord wound up, so the springs not as tensioned)
leave it the f

k alone!

Mine wouldnt budge, layers of crud had stuck it all together, so I approached it slightly differently

I unwound the cable (mistake n.1), and prised the locking tabs off to remove this

I then lifted the springs out, and they nearly took my head off

Amazingly, they seemed to wind up ok

The clear plastic cap holds the rewind to the machine, so with that off the reel lifts out

it runs on these contact rings like a Numatic reel does

Happy 5th Birthday Dyson...In need of a full rebuild already...

This cap prises off and reveals the cord connections

which simply unplugs

One layer out

5 even TINIER screws and the cord reel back lifts out

and unplugs from the machine

The contact rings pop off the reel back

Moving onto the switch housing now. The cyclone release lever snaps out of the housing

The floor tool parking slot unscrews and snaps out of the housing

The buttons pop out from either corner

Sorry for the rubbish pics, the camera wouldnt focus...

Same for the cord rewind button

With a rather significant amount of prising and levering the housing pops up and can be removed

The switch pulls off the housing now

and the wires removed.

The switch - cord rewind can be removed completely

Back to the front of the machine now, and one screw on the top and one underneath release the hose input

This was so covered in plaster dust the flash bounced back

The next bit is very tricky. There are no screws holding the motor housing in, just large clips. So, 2 screwdrivers and some swearing, and it popped out with a large crack, and no damage luckily. There is a rubber tube leading to the post filter area too, which needs to be poked through as it goes.

The top cover came off as well, although the clips holding it on hold the motor into the housing so they unclipped on removal

There was a metal plate on the side of the housing

Ah, a comically large (for the size of the machine) PCB

The 2 motor wires disconnect from this board

The motor can be removed from the housing now

It's a panasonic

Fancase taps off

and a nut releases the fan and 2 washers

Another washer sits under the fan

2 screws seperate the bottom fan from the motor

and that's it! The motor doesnt come apart anymore!

Bit emptier now

There's a screw under the front to go

and the vent and very tip peice are removed

Onto the cyclone next

That's not flash glare...

Cyclone bottom flap comes off as per usual, and the outer seal pulls away

as does an inner seal

The top handle pops forward and off

Release rod pops out the top

4 screws enable the top cover to be removed

Another one holds the inner cap on

The inner seal sits below this

Now the inner cyclone was very interesting

Damn flash flare, I'm so sorry!

They all popped out, as did the middle 3 cones

The shroud and bottom cone seperated from the upper cyclones as they all do

And, she was stripped down!

beko1987 · « **Reply #1 on:** February 19, 2015, 12:43:58 AM »

This was going to be on one post, but surprisingly I reached the 25000 character limit

All the parts were washed, the hose and pre motor filter went through the washing machine with some other bits the next night. If you drank your tea watching the stripdown, you'll need another for the re-assembly!

She hasn't come up 100% I'm afraid

Shroud still had residue in the holes

but it was as clean as it will ever get so back together the cyclone went!

Upper seal back on

Sadly the shroud split when removing it, only on one side though

3 Inner cones back together

and all the removable plugs back in the correct order. The black and white ones are moulded differently, so don't fit in each others holes

Top half looks better

and the middle screw went back in, followed by the lid and those 4 screws

Top handle was a pain to get back on, both the front and the back had to go in together, at different angles... was a lot of creaking plastic...

Inner seal back in

Outer seal back on

flap back onto the bin

Some damage to the bin now visible

and the cyclone is done!

sadly very cloudy and sandblasted

Onto the main machine now. Air vent back on

Some more damage unearthed now it's clean...

hose fixing plate snapped back in

Motor next, and I popped the carbons out and cleaned them up

Cleaned the motor up as best I could

First layer on

the fan was washed, scraped and de-clogged, and went back on

and then the nut and washers

The motor is one of these

The motor went back into the slightly cleaner housing now

rubbers on

back into the housing

I cleaned the PCB and thermal fuse up

byebye

mount for the housing fits into the chassis

This bit was tricky again. I couldnt get the motor housing back inw ith the 2 rubber mounts in place, so fitted the housing, then, using some oil, slid each mount into place. The third one was a pain...

all fitted!

This little sensor sits behind the hose entry port, and was buried under dust. It feeds through the chassis and into it's mount

then clips into place

Hose port clips back on now

Motor to switch wire was clipped into place

and fed the switch to cord wire through along with it

Switch back into place

Housing back on

screws and springs in

and the pedals

and the parking slot

cyclone catch was a bit more fiddly, but snapped in eventually

Cord rewind contacts were refitted

the wires were connected up, and fed through the support brackets

I started poking about with the release valve, which I didnt think came out. Turns out it does...

so I gave it a wipe down and refitted it. Then the cord rewind backing plate screws to the chassis

The cord guide goes onto the cord

https://lh6.googleusercontent.com/-ld3H7rqpeQw/VOTco5c6pZI/AAAAAAAAikQ/dMmUFOW4llU/s800/upload_-1.jpg

The cord plugs back onto the reel

and I refitted the old re-wound springs and top cap, and screwed it down.

Then the top half of the rewind

I tried to re-tension the reel, but no matter what I tried it wouldnt do it, so I checked that the motor ran nicely, which it did, and ordered a new rewind spring assembly, which seems about the only spare stocked by anyone...

Gave up on the cord and moved on to the filter housing

Button back on

The button is pocked too sadly, this machine's been rolled a few times I think

filter housing back on

The filter washed up REALLY well

so I fitted it for now. May buy a new one if I'm feeling flush on payday and I end up liking the machine at all...

I went to bed at the point (this was tuesday night), and when I got home from work today, I carried on.

New cord rewind spring had arrived

so I pulled the old one off (moving my head first this time), wound the cord onto the reel and fitted the new spring

A quick check of the cable confirmed good, if not a bit slow operation. The reel tensions itself up when removing the cord, I had to adjust the amount of pull though as the prings nearly pinged off their supports, so left a whole loop around the support pegs.

Satisfied that it was as good as it would ever be, I refitted the housing

had to give each ring a short sharp tap with the hammer on each of the clips to fit it...

Same on t'other side

Post motor filter now, and when I initially got it, there was a seal hanging off the surround for the output, which promptly fell off completely...

so I bought a Vax 121 bucket seal strip

and trimmed it to fit, and made a lovely new seal

A new post motor HEPA filter

slight difference to the old one

Managed to get the broken clip to turn home, so for now it's not a problem. If I can afford it on pay day and the machine deserves it I'll try and obtain a new door unit. It wont be the end of the world if it wont though, since the filter is shiney new

Hose now!

which had cleaned up really really well, and after some cif and microfibre action on the outside all the paint was gone.

Refitted the release catch

refitted the hose

fitted the handle

and she was finally done!

Eva tried it out when we were done, and her face says it all, it's not a brilliant performer tbh!

It doesnt feel like 1300w of suction, the floor tool feels like theres no suction at all on carpet, yet it glues itself to the lino in the kitchen. I don't think there's any air leakage on the machine, as when I block the hose off the release valve opens fine. Will remove the pre motor filter and see if it's killing airflow anywhere...

Had a quick play anyway!

<a href="https://www.youtube.com/watch?v=UE7LXYjZ1l0" target="_blank">https://www.youtube.com/watch?v=UE7LXYjZ1l0</a>

Sounds a bit screamy, but after the battering the motor has taken already, I'm amazed it still runs at all...

Few more bits to do, and I'll investigate the seemingly poor suction too, it just doesnt seem as sharp as a 1300w motor should, My Hoover 417g is comparable, the Hitachi Powerhouse CV70D has sharper suction...

Hey ho, it's been fun to do!

MVacs · « **Reply #2 on:** February 19, 2015, 01:53:40 AM »

Awesome strip down guide and photos!

I have one of those 915219-03 HEPA filters on my desk at home to put on our site when I get around to it.

Edit: Now on the shop >>here<<

beko1987 · « **Reply #3 on:** February 19, 2015, 10:20:30 AM »

I did check your sale page, but couldnt find any.

I went to move it this morning and the floro brush got caught in the parking slot, and the whole machine picked up too. Sod it, saved me bending over! It really is a tiny machine. Funky, but not terribly practical. Due to my height, when I use it and pull it about the front end lifts up and it comes over on it's rear wheels...

beko1987 · « **Reply #4 on:** February 20, 2015, 10:41:11 AM »

Mmmmm, I thought somethign was amiss but I don't think it is...

In use, there's a loud howling from the machine. At first, I thought it was just the motor being a bit knackered, but if I remove the cyclone the noise stops and the motor sounds lovely!

Intregued, I stripped the cyclone apart again just to check. All was well...
Opening the pre motor filter cover stops the noise
Removing the filter and closing the door again and the noise re-appears

Could it just me that the sirflow paths are so tight on this machine that the airflow is causing the howling noise somewhere? There's no leakage, the noise doesn't stop if I squeeze the machine whilst running.

Anyone else got a DC26 who could confirm or deny there is an odd noise with the cyclone in place and that the noise stops when it or the pre motor filter cover is removed?